What is thundersnow?

Winter storms typically come with an eerie silence, but on rare occasions they are accompanied by a roar of thunder.

Thunder produced by a snowstorm is a real phenomena.

During a spring or summer storm, ice particles within the cloud collide, creating positive and negative charges. As the charge builds, it may become too intense and a bolt of lightning forms.

This process is the same within a snowstorm. Due to the structure of a snowstorm, the flash of lightning may not be seen, especially during the day, but the loud clap of thunder can be heard. That sound is what’s called “Thundersnow.”